Water-supply system.



L. A. NITSCHE.

WATER SUPPLY SYSTEM.

APPLICATION FILED MAY II. I9I5.

Patented Nov. 23, 1915.

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/7 I ,f/ /AA IIII ATTR/VEVS L. A. NITSCHE.

WATER SUPPLY SYSTEM.

APPLICATION FILED IIIAYII Patented Nov. 23, 1915.

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. WMJM III@ LOUIS lA. NITSCI-IE, OF TULSA, OKLAHOMA.

WATER-SUPPLY SYSTEM.

l Specification of Letters Patent.

rati-,atea nov. as, rois.

Application filed May 11, 1915. Serial No. 27,331.

To all whom t may concern Be it known that I, Louis A. N iTscHE, a citizen of the United States, and a resident of Tulsa, in the county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Tater-Supply Systems, of which the following is a specificat1on.

My present`invention relates generally to methods and means for constructing water supply wells, and more particularly to the construction of wells of a stable permanent nature in shifting soils such as quicksand, my primary object being to provide for the formation of such wells withoutthe necessity for the use of pile drivers and other expensive and cumbersome apparatus, such as is now necessary for this purpose. Briefly referring to the development of such method and means at the present time, the coffer members in which the perforated well casings are set and surrounded by gravel before withdrawal of such members, are invariably of sheet piling, necessitating the use of'pile drivers to sink the piles into desired position, and other expensive apparatus to effect their withdrawal.

In accordance with my invention, a single piece cofer tube, as distinguished from a piling construction, is lowered under pressure of, and may be withdrawn by, means which form part of this invention and find their support upon an anchor wall sunk around a pit at the upper end of the well casingA and coffer tube, and a suitable distance below the surface of the soil, preferably to the water level.

The various steps of the method proposed by my invention, and the means employed in carrying out these ste s, are clearly shown in the accompanying drawings, forming a part of this specification, and will be better understood from the following description in which reference is made to the drawings Wherein- Figure 1 is a central vertical section illustrating the completed first step, namely, the finished anchoiwall sunk to water level. Fig. 2 is a similar view illustrating the second step, namely, the sinking of the coffer Atube by pressure means finding their support upon the anchor wall. Fig. 3 is another similar View illustrating the third step of removing the sand from within the coffer tube. Fig. 4 is an other similar view illustrating the next step of' setting the perforated well vertical section illustrating the completed- Well.

It is usual as above stated, to sink a coffer member consisting of sheet piling, from the surface of the ground, the piles being driven in by the use of a pile driver, withdrawing the sand from the coffer tube so formed, and setting the well casing within the space inclosed by the coffer member to provide for the reception of gravel around the well casing before the coifer tube is removed.

Referring to these figures, however, it will` be seen that in order to do away with the necessity of expensive apparatus utilized both in sinking and withdrawing the sheet piling tube, I sink a brick wall indicated at A in the surface of the soil, and of circular form surrounding a selected spot, this wall extending some distance below the surface of the soil as clearly seen in the several figures, and being preferably extended downwardly to the water line or level. The wall A thus formed, constitutes a permanent support for the operating means to be hereinafter described for both sinking and removing the coffer tube, the latter being in this case in the form of a single piece tube as distinguished from a tube formed of sheet piling. Tn length, of course, this coffer tube may be in any desired number of sections. This coffer tube is indicated at C in the several figures, and after disposition in place as shown in Fig. 3, provides for the recep- -tion of the well casing D, in the usual manner as shown in Figs. 4, 5, and 6 to enable the filling of gravel as indicated at E in Figs. 5 and 6 to be placed around the well casing before the coffer tube is removed, and

thus effectively prevent the sand from getting into the well casing itself.

Referring now to-Fig. 1, it Will be seen that the wall A as erected and disposed in the desired position above described, is provided with a series of U-shaped anchor bolts A', the free upper extensions of which are adapted to receive and rigidly secure upon the sinkingA offthe Colfer tube C from the. water level at the base ofthe pit B 'formed by the wall A, through the coperation of the pressure means G finding their ulti-- mate support in the anchor'wall A, and operating directly upon 'the cofer tube or 'through the use of cribbing G.

It is to be observed, durmg the two op- -erations, that of sinking lthe wall A andthe Y next st ep of sinking the loofer .tube C, all

' danger of shiftingof the'sand isob'viated, I andthe desired result accomplished with- I namely the withdrawal of the sand from' within the coffer tube C, is in reality apart of the step of taking the cofi'er intoy posi? out disturbing the natural formation of the surrounding soil.

lThe third step asillustrated 3,

- tion, inasmuch as the sand must be removed from the'coifer tube as the same is lowered, although following. at sulicient distance above the lower end ofthe cofer tube to obviate all danger of sucking up surrounding sand and disturbing its natural formation.

The `step illustrated in Fig. 4, that of setting the ,well casing D within the c'ofer tube C, the perforated lower end of which well casing is constructed as usual and indicated at D', will be well understood as providing for the reception of the gravel E in the space between the well casing D and the cofer tube C in the neXt step as illustrated in Fig. 5, which shows the filling'in course of disposition. i

The lastl step as indicated in Fig. 6, is thus the withdrawal of the coer tube C, which may be effected by the same pressure means, similarly finding their support in the anchor wall A, as illustrated in Fig 2, for the sinking of the coft'er tube in place.

My improved method, and the means utilized to carry out the same, will thus be seen to entirely obviate the necessity of all expensive machinery of the nature now rey quired for this work, to enable a considerablefsaving 1n time and expense of formation of the well, through these means, and to provide for the sinking of a one-piece coffer tube as distinguished vfrom a coifer tube formed of sheet piling, of such dimensions as would be' impossible to sink by the usev of a pile driver such as now employed for this purpose. y v

In Fig. 8 the complete well, formed in'accordance with my improved method and through" the use of the means specified, is

shown, a pump H being indicated-.in dotted lines inthe position in which the same will be disposed, that is, within the pit 13, for

the-purposejof withdrawing the water from the well casing D'. I y t I claim .1. The method of well formation herein described, whichl consistsin sinking an anchor wall a suitable distance below the surface and around the selected point, sinking a cofer either partly or wholly through the coperation of said anchor wall,remo\v'ing the sand from the coifer tube, setting a well casing in spaced relation within the sunken coifer tube, illing the space between the casing and the tube by a porous sand excluding material, and removing the Colfer tube.

2. The method of Well formation herein described which consists in sinking an anchor wall to water level, sinking` a coifer tube from within the wall and downwardly from the water level, removing the sand vfrom the coffer tube, setting a well casing the latter of which forms a removable coffer i' dam and the former of which constitutes Y the well casing, and an anchor wall surrounding'the upper end of said tube and forming a support by means of which the outer tube may be initially positioned.

4. In a well, spaced inner and outer tubes, the latter of which forms a removable coifer dam and the former of which constitutes the well casing, an anchor wall surrounding the upper end of said tube and extending downwardly from the surface of the soil, and pressure means supported by the said anchor wall for initially sinking the outer tube in the sand, substantially as described.

LOUIS A. NITSCHE.

Wvitnesses i MYRoN G. CLEAR, SoLoN'C. KEMoN. 

